mirrors/haproxy
1
0
Fork 0
mirror of https://git.haproxy.org/git/haproxy.git/ synced 2025-09-21 13:51:26 +02:00
Code Issues Projects Releases Wiki Activity

[DOC] document the server's slowstart parameter

Browse Source
This commit is contained in:
Willy Tarreau 2007-11-30 17:46:49 +01:00
parent 9909fc13f1
commit 5764b38c38
1 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
doc/configuration.txt
View File

@ -703,3 +703,25 @@ option contstats
it is not enabled by default, as it has small performance impact (~0.5%). it is not enabled by default, as it has small performance impact (~0.5%).
2.3) Server options
-------------------
slowstart <start_time_in_ms>
The 'slowstart' parameter for a server accepts a value in milliseconds which
indicates after how long a server which has just come back up will run at
full speed. The speed grows linearly from 0 to 100% during this time. The
limitation applies to two parameters :
- maxconn: the number of connections accepted by the server will grow from 1
to 100% of the usual dynamic limit defined by (minconn,maxconn,fullconn).
- weight: when the backend uses a dynamic weighted algorithm, the weight
grows linearly from 1 to 100%. In this case, the weight is updated at every
health-check. For this reason, it is important that the 'inter' parameter
is smaller than the 'slowstart', in order to maximize the number of steps.
The slowstart never applies when haproxy starts, otherwise it would cause
trouble to running servers. It only applies when a server has been previously
seen as failed.